<template>

  <div class="app-container">

    <h2 style="text-align: center;">发布新课程</h2>

    <el-steps :active="2" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="最终发布"/>
    </el-steps>
<el-button type="text" @click="cancel">添加章节</el-button>
        <!-- 章节 -->
            <ul class="chanpterList">
                <li
                    v-for="chapter in chapterVideoList"
                    :key="chapter.id">
                    <p>
                        {{ chapter.title }}
                        <span class="acts">
                          <el-button type="text" @click="openVideo(chapter.id)">添加课时</el-button>
                          <el-button style="" type="text" @click="openEditChatper(chapter.id)">编辑</el-button>
                          <el-button type="text" @click="removeChapter(chapter.id)">删除</el-button>
                        </span>
                    </p>

                    <!-- 视频 -->
                    <ul class="chanpterList videoList" >
                        <li
                            v-for="video in chapter.children"
                            :key="video.id">
                            <p>{{ video.title }}
                                <span class="acts">
                                    <el-button type="text"  @click="openEditVideo(video.id)">编辑</el-button>
                                    <el-button type="text"  @click="removeVideo(video.id)">删除</el-button>
                                </span>
                            </p>
                        </li>
                    </ul>
                </li>
        </ul>
        <!-- 添加和修改章节表单 -->
        <el-dialog :visible.sync="dialogChapterFormVisible" :title = this.title>
            <el-form :model="chapter" label-width="120px">
                <el-form-item label="章节标题">
                    <el-input v-model="chapter.title"/>
                </el-form-item>
                <el-form-item label="章节排序">
                    <el-input-number v-model="chapter.sort" :min="0" controls-position="right"/>
                </el-form-item>
            </el-form>
            <div slot="footer" class="dialog-footer">
                <el-button @click="dialogChapterFormVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveOrUpdate">确 定</el-button>
            </div>
        </el-dialog>


        <!-- 添加和修改课时表单 -->
        <el-dialog :visible.sync="dialogVideoFormVisible" :title="this.courseTitle" >
          <el-form :model="video" label-width="120px">
            <el-form-item label="课时标题">
              <el-input v-model="video.title"/>
            </el-form-item>
            <el-form-item label="课时排序">
              <el-input-number v-model="video.sort" :min="0" controls-position="right"/>
            </el-form-item>
            <el-form-item label="是否免费">
              <el-radio-group v-model="video.isFree">
                <el-radio :label="1">免费</el-radio>
                <el-radio :label="0">默认</el-radio>
              </el-radio-group>
            </el-form-item>
            
            <el-form-item label="上传视频">
              <el-upload
                    :on-success="handleVodUploadSuccess"
                    :on-remove="handleVodRemove"
                    :before-remove="beforeVodRemove"
                    :on-exceed="handleUploadExceed"
                    :file-list="fileList"
                    :action="BASE_API+'/eduvod/filevod/uploadAlyiVideo'"
                    :limit="1"
                    class="upload-demo">
              <el-button size="small" type="primary">上传视频</el-button>
              <el-tooltip placement="right-end">
                  <div slot="content">最大支持1G，<br>
                      支持3GP、ASF、AVI、DAT、DV、FLV、F4V、<br>
                      GIF、M2T、M4V、MJ2、MJPEG、MKV、MOV、MP4、<br>
                      MPE、MPG、MPEG、MTS、OGG、QT、RM、RMVB、<br>
                      SWF、TS、VOB、WMV、WEBM 等视频格式上传</div>
                  <i class="el-icon-question"/>
              </el-tooltip>
              </el-upload>
          </el-form-item>
          </el-form>
          <div slot="footer" class="dialog-footer">
            <el-button @click="dialogVideoFormVisible = false">取 消</el-button>
            <el-button :disabled="saveVideoBtnDisabled" type="primary" @click="saveOrUpdateVideo">确 定</el-button>
          </div>
        </el-dialog>
        <div>
            <el-button @click="previous">上一步</el-button>
            <el-button :disabled="saveBtnDisabled" type="primary" @click="next">下一步</el-button>
        </div>
  </div>
</template>

<script>
import chapter from '@/api/edu/chapter'
import video from '@/api/edu/video'

export default {
        data(){
            return {
                saveBtnDisabled: false,
                saveVideoBtnDisabled:false,
                chapterVideoList:[],
                courseId :'',
                dialogChapterFormVisible: false,//章节弹框
                dialogVideoFormVisible:false,//小节弹框
                chapter:{
                  title:'',
                  sort:0
                },
                title:'添加章节',
                video:{
                  title: '',
                  sort: 0,
                  isFree: 0,
                  videoSourceId: '',
                  videoOriginalName:''
                },
                fileList:[],
                BASE_API:process.env.VUE_APP_BASE_API,
                courseTitle:'添加课时'

            }
        },
        created(){
          if(this.$route.params && this.$route.params.id){
              this.courseId =this.$route.params.id
              this.getChapterVideo()
          }
          
        },
        methods:{
//=================================================小节=======================================================================================================================================
         //小节视频
         //成功回调
          handleVodUploadSuccess(response, file, fileList) {
            this.video.videoSourceId = response.data.videoId
            this.video.videoOriginalName = file.name
            console.log("videoId：" + response)
            console.log("videoSourceId：" + this.video.videoSourceId)
             console.log("videoOriginalName" + this.video.videoOriginalName)

            console.log("video：" + this.video)




          },
          //视图上传多于一个视频
          handleUploadExceed(files, fileList) {
            this.$message.warning('想要重新上传视频，请先删除已上传的视频')
          },

          //删除
          beforeVodRemove(file, fileList){
                return this.$confirm(`确定移除 ${ file.name }视频文件？`);
          },
          handleVodRemove(){
            video.removeAlyVideo(this.video.videoSourceId)
                .then(Response =>{
                    this.$message({
                                type: 'success',
                                message: '删除成功!'
                                });
                    this.fileList = []
                    this.video.videoSourceId = ''
                    this.video.videoOriginalName = ''
                })
          },


          //=========================小节=============
         //小结添加的弹框方法
          openVideo(chapterId){
            this.fileList = []
            this.video= {}
            this.dialogVideoFormVisible = true
            this.courseTitle = '添加课时'
            
            //设置章节id
            this.video.chapterId = chapterId
          },
          //删除小结
          removeVideo(videoId){
            // this.dialogVideoFormVisible = true
                this.$confirm('此操作将永久删除小节记录, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).then(() => {
                    //删除操作
                    video.deleteVideo(videoId)
                    .then(response => {
                        this.$message({
                                type: 'success',
                                message: '删除成功!'
                                });
                        //刷新界面
                        this.getChapterVideo()
                    })
                }).catch(() => {
                    this.$message({
                        type: 'info',
                        message: '已取消删除'
                    });
                })

          },
          
          //修改小结的弹窗方法
          openEditVideo(videoId){
            this.dialogVideoFormVisible = true
            this.courseTitle = '修改课时'
            video.getVideoInfo(videoId)
              .then(Response => {
                  this.video = Response.data.eduVideo 
              })
          },
          //修改小结
            updateVideo(){
              video.updateVideo("我是你爹" + this.video)
                .then(Response => {
                  //关闭弹框
                  this.dialogVideoFormVisible = false
                  //提示
                  this.$message({
                      type:'success',
                      message:'修改章节成功！',
                  }) 
                  //刷新界面
                  this.getChapterVideo()
                })
            },
          //添加方法
          addVideo(){
            this.courseTitle = '添加课时'
            this.video.courseId = this.courseId
            video.addVideo(this.video)
              .then(response =>{
                this.dialogVideoFormVisible = false
                this.$message({
                  type: 'success',
                  message: '添加课时成功!'
                  });

                //刷新界面
                this.getChapterVideo()
                console.log("添加videoSourceId：" + this.video.videoSourceId)
                console.log("添加videoOriginalName" + this.video.videoOriginalName)
                 
              })  
          },
          
          saveOrUpdateVideo(){
            if(!this.video.id){
                this.addVideo()
              }else{
                this.updateVideo()
              }
          },

//=================================================章节=======================================================================================================================================
          //删除章节弹窗展示
            removeChapter(chapterId){
              // alert(id);
            // teacher.deleteTeacherid(id)
                this.$confirm('此操作将永久删除章节记录, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).then(() => {
                    //删除操作
                    chapter.deleteChapter(chapterId)
                    .then(response => {
                        this.$message({
                                type: 'success',
                                message: '删除成功!'
                                });
                        //刷新界面
                        this.getChapterVideo()
                    })
                }).catch(() => {
                    this.$message({
                        type: 'info',
                        message: '已取消删除'
                    });
                })
            
            },
          //修改章节弹框显示
            openEditChatper(chapterId){ 
              this.title = '修改章节'
              this.dialogChapterFormVisible = true
              chapter.getChapterInfo(chapterId)
                .then(Response => {
                    this.chapter = Response.data.chapter
                })
            },
          //更新清空
            cancel(){
              this.dialogChapterFormVisible = true
              this.title = '添加章节'
              this.chapter={}
                                             

            },
            //原始清空
            // dialogChapterFormVisible(){
            //   this.chapter.title = ''
            //   this.chapter.sort = 0
            // },
            //添加功能
            addChapter(){
              this.chapter.courseId = this.courseId
              chapter.addChapter(this.chapter)
                .then(Response => {
                  //关闭弹框
                  this.dialogChapterFormVisible = false
                  //提示
                  this.$message({
                      type:'success',
                      message:'添加章节成功！',
                  }) 
                //刷新界面
                this.getChapterVideo()
                // 原始清空
                // this.chapter.title = ''
                // this.chapter.sort = 0
              })    
            },

            
            //修改课程功能
            updateChapter(){
              chapter.updateChapter(this.chapter)
                .then(Response => {
                  //关闭弹框
                  this.dialogChapterFormVisible = false
                  //提示
                  this.$message({
                      type:'success',
                      message:'添加章节成功！',
                  }) 
                  //刷新界面
                  this.getChapterVideo()
                })
            },
            //调用更新修改课程功能  
            saveOrUpdate(){
              if(!this.chapter.id){
                this.addChapter()
              }else{
                this.updateChapter()
              }
            },


            //  根据课程查询id章节和小结
            getChapterVideo(){
              chapter.getChapterVideo(this.courseId)
              .then(Response =>{
                this.chapterVideoList = Response.data.allChapterVideo
                console.log(this.chapterVideoList)
              })
            },
            //上一步
            previous(){
                this.$router.push({path:`/course/info/${this.courseId}`})

            },
            next(){
                //跳转到下一步
                this.$router.push({path:`/course/publish/${this.courseId}`})


            }
        }

}
</script>
<style scoped>
.chanpterList{
    position: relative;
    list-style: none;
    margin: 0;
    padding: 0;
}
.chanpterList li{
  position: relative;
}
.chanpterList p{
  float: left;
  font-size: 20px;
  margin: 10px 0;
  padding: 10px;
  height: 70px;
  line-height: 50px;
  width: 100%;
  border: 1px solid #DDD;
}
.chanpterList .acts {
    float: right;
    font-size: 14px;
}

.videoList{
  padding-left: 50px;
}
.videoList p{
  float: left;
  font-size: 14px;
  margin: 10px 0;
  padding: 10px;
  height: 50px;
  line-height: 30px;
  width: 100%;
  border: 1px dotted #DDD;
}

</style>
